Don't get me wrong, if I was in that Aurora movie theater, I would much rather be next to my roommate packing a pistol, who is a Marine with two combat tours under his belt, than not. But I don't really think that that is the choice we are generally making. More often the choice is being in the theater with one person indiscriminately firing or more than one person indiscriminately firing. That's also an easy choice.
I think the ultimate solution is for me to just stand next to TexasTundra for the rest of my life. But just so you know, I'm not a coyote.